Configuring for high availability on IBM High Availability Cluster Multiprocessing (HACMP) requires:
Two hardware-compatible nodes running HACMP for AIX, Version 5.2, that are configured in the same cluster.
Each node must have three IP addresses, one for service, one for start, and one for standby. The standby IP address should be on a different subnet from the other two.
Shared disk devices set up for the high availability system between the nodes.
Shared logical volume groups set up to contain all the database devices in the cluster. Both nodes must have the same major number for each of the shared volume groups defined in the cluster. In this chapter, these resources are referred to as:
shared_vg1 – for the primary node
shared_vg2 – for the secondary node
See the HACMP for AIX Installation or Administration Guide for information about installing the high availability system.
Sybase also recommends that you identify the following resources in advance:
A resource group name for the primary companion (for example, resgrp1)
A resource group name for the secondary companion (for example, resgrp2)
The name of the primary companion
The name of the secondary Adaptive Server companion
